Stefan Hendricks
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sthendric.bsky.social
Stefan Hendricks
@sthendric.bsky.social
2K followers 740 following 12 posts
Geophysicist at the Alfred Wegener Institute (@awi.de) und 🇩🇪, Research focus: 🌊🧊🛰️ #seaice thickness #remotesensing using satellite #altimetry. Also @[email protected]
Views are my own.
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Reposted by Stefan Hendricks
seaice.de
Operational processing of the Level-4 (L4) CryoSat-2/Sentinel-3/SMOS (CS3SMOS) sea ice thickness product has been started for the Arctic 2025/26 winter season. The product version has seen a major upgrade from v206 to v300.
#Arctic #Climate @esaclimate.bsky.social

spaces.awi.de/spaces/CS2SM...
Sea ice thickness from CryoSat-2/Sentinel-3/SMOS in the northern hemisphere from October 15 to October 21, 2025 (near real-time processing)
October 23, 2025 at 4:16 PM
Reposted by Stefan Hendricks
esaclimate.bsky.social
A new satellite approach tracks drifting Arctic sea ice, giving us clearer, more accurate maps of ice thickness. 🛰 A useful step for monitoring climate change in the polar regions. Read more: climate.esa.int/en/news-even...
September 16, 2025 at 1:42 PM
Reposted by Stefan Hendricks
oceanterra.org
The @copernicusecmwf.bsky.social and @wmo-global.bsky.social European State of the Climate Report is launched today

🌐 more than 40 datasets
👩‍🔬 over 100 scientists
🗺️ > 130 charts and graphics

Check it out: climate.copernicus.eu/ESOTC

🌏🌡️🧪⚒️🌊🛰️
April 15, 2025 at 5:19 AM
sthendric.bsky.social
🎈🎈🎈🎈🎈🎈🎈🎈🎈🎈🎈🎈🎈🎈🎈
esa.int European Space Agency @esa.int · Apr 8
#OTD 8 April 2010, launch of #Cryosat2, Europe's first mission dedicated to studying Earth’s ice ❄️ and water 💦

Still operational 15 years later! 👏

Happy launch anniversary #CryoSat2! 🎉

🔗 earth.esa.int/eogateway/su... @esaearth.esa.int
ESA's CryoSat mission provides data to determine the precise rate of change in the thickness of the polar ice sheets and floating sea ice. It is capable of detecting changes as little as 1 cm per year. The information from CryoSat is leading to a better understanding of how the volume of ice on Earth is changing and, in turn, a better appreciation of how ice and climate are linked.
April 8, 2025 at 9:56 AM
Reposted by Stefan Hendricks
signeaaboe.bsky.social
The full stop of the increasing winter sea-ice extent in the Arctic has now lasted for two weeks...

🌊⚒️🧪🥼❄️
Line graph showing the daily sea-ice extent for the Arctic from 1978 to the present time in 2025. 2025 is shown in the thick black line to the left, while the previous years are presented in plasma colormap with the earliest years in purple and most recent years in yellow'ish. Since January 27th, the normal winter increase in sea-ice extent has completely stopped. Arctic ice extent is now record low and significantly lower than previous years. Data source is the OSI SAF sea-ice index v2.2.
February 10, 2025 at 7:51 AM
Reposted by Stefan Hendricks
seaice.de
Sea ice paper alert, congratulations to my colleagues!

Krumpen, T., von Albedyll, L., Bünger, H.J. et al. Smoother sea ice with fewer pressure ridges in a more dynamic Arctic. Nat. Clim. Chang. (2025). doi.org/10.1038/s415...

#Arctic #climate 🌊 🥼❄️
rdcu.be/d5rtv
Smoother sea ice with fewer pressure ridges in a more dynamic Arctic
Nature Climate Change - Pressure ridges, a characteristic feature of Arctic sea ice, play an important role in the ecosystem but pose challenges to shipping. Here the authors use aircraft...
rdcu.be
January 6, 2025 at 6:51 PM
Reposted by Stefan Hendricks
signeaaboe.bsky.social
Sea-ice extent in the Arctic just took a sharp turn and is now located in "record-low for this date" region 📉
🌊🧪⚒️
Line graph showing the daily sea-ice extent for the Arctic for the period 1978 to 2024. 2024 is shown in black while the previous years are shown in decadal-grouped colors. Most recent observations from December 2024 show record-low ice extent for this time of the year. Data source is the OSI SAF sea-ice index v2.2.
December 11, 2024 at 11:07 AM
Reposted by Stefan Hendricks
malinodalen.bsky.social
Newly created starter pack for Polar Oceanography 🌊❄️

My follow list is far from complete, so let me know if I have missed you/someone else you think should be included!

go.bsky.app/851nQgx
November 9, 2024 at 4:02 PM
Reposted by Stefan Hendricks
rsimmon.bsky.social
Light or dark mode?
North pole view of Arctic sea ice thickness from March 8–15 2024, measured by SMOS & Cryosat-2. Thickness ranges from 0.04 (light green) to 4 meters thick (dark blue). The thickest ice is concentrated along the coast of Arctic Canada and Greenland. North pole view of Arctic sea ice thickness from March 8–15 2024, measured by SMOS & Cryosat-2. Thickness ranges from 0.04 (dark blue) to 4 meters thick (light green). The thickest ice is concentrated along the coast of Arctic Canada and Greenland.
July 26, 2024 at 12:09 AM
Reposted by Stefan Hendricks
greatwhitecon.info
Here's our mid month update on #CryoSat2/#SMOS merged #Arctic #SeaIce thickness and volume:

greatwhitecon.info/2024/11/fact...
CryoSat-2/SMOS merged Arctic sea ice volume graph on November 15th 2024 CryoSat-2/SMOS merged Arctic sea ice thickness map on November 15th 2024
November 18, 2024 at 1:12 PM
Reposted by Stefan Hendricks
malinodalen.bsky.social
They now exist.

Marine biogeochemistry
go.bsky.app/TK79r4w

Polar ocean
go.bsky.app/851nQgx

Physical oceanography
go.bsky.app/Eb6xX19

Sea level and coastal erosion
go.bsky.app/B6spBdu
November 9, 2024 at 7:02 PM
Reposted by Stefan Hendricks
rblourenco.bsky.social
Find your #remotesensing buddies here 💓
go.bsky.app/4PMRhNL
November 10, 2024 at 10:10 PM
Reposted by Stefan Hendricks
seaice.de
Some good news: The Advisory Committee for Earth Observation (ACEO) has recommended extending the SMOS mission until the end of 2028, alongside CryoSat-2 and SWARM. ❄️🧊🛰️
November 11, 2024 at 8:19 AM
Reposted by Stefan Hendricks
dnthomas01.bsky.social
Just started a starter feed listing Arctic and Antarctic communicators already on Bluesky
...please let me know who else to add & apologies to all I've missed - just let me know and I'll sort it

go.bsky.app/7RL1i9C
November 8, 2024 at 5:38 AM
Reposted by Stefan Hendricks
katharinehayhoe.com
Welcome
@berkeleylabemp.bsky.social
@miamirosenstiel.bsky.social
@miamiresilience.bsky.social
@climatereefs.bsky.social
@ficlima.bsky.social
to my starter pack of research organizations, centers and departments that bring folks together to tackle climate.

Click here to follow some or all:
November 7, 2024 at 2:07 PM
Reposted by Stefan Hendricks
zacklabe.com
A first look at the CryoSat-2/SMOS merged product for #Arctic sea ice thickness this fall. Now looking after the melt season, we see thinner ice north of Greenland relative to last year and thicker in the Central Arctic.

This graphic will now be updated weekly at zacklabe.com/arctic-sea-i... 🌊⚒️
Two polar stereographic maps showing Arctic sea ice thickness from CryoSat-2/SMOS and the difference relative to the previous year (October 2023). Ice is thinner than last year toward Greenland.
October 29, 2024 at 11:57 AM
Reposted by Stefan Hendricks
zacklabe.com
The disappearance of thicker Arctic sea ice by decade in December... 🧊📉

More info on data: climatedataguide.ucar.edu/climate-data...
Four polar stereographic maps showing Arctic sea ice thickness for the month of December in 1983-1992, 1993-2002, 2003-2012, and 2013-2022. Thickness is shown with colors from black at 0 meters to purple at 2.5 meters to white at 5.0 meters. Sea ice in thinning in all regions over time.
December 11, 2023 at 7:19 PM
sthendric.bsky.social
We have released the next version 206 of the SMOS/CryoSat-2 L4 (CS2SMOS) sea ice thickness data set spanning 14 years:

earth.esa.int/eogateway/ne...
New version v206 of the SMOS-CryoSat level 4 sea ice thickness product is now available - Earth Onli...
The new version 206 of the merged SMOS-CryoSat level 4 sea ice thickness product is now available on the SMOS data dissemination service.
earth.esa.int
December 5, 2023 at 8:31 AM
Reposted by Stefan Hendricks
signeaaboe.bsky.social
Arctic sea ice in November 2023:
- The extent of Arctic ice for this month is the 8th lowest on record.
- The ice has shifted north in most areas, except in the Greenland Sea where there is an above-average amount of ice for November.
🧪⚒️
Map showing the Arctic sea-ice concentration averaged over November 2023. For comparison, the mean November sea-ice extent for the period 1981-2010 is represented by an orange contour. Source data is OSI SAF sea-ice concentration CDR v3.0 The line graph displays the sea-ice extent in the Arctic for the month of November from 1978 to 2023. In 2023, the extent was below average, ranking as the eighth lowest. Data source is the OSI SAF sea-ice index v2.2.
December 1, 2023 at 10:37 AM
Reposted by Stefan Hendricks
signeaaboe.bsky.social
What a winter season in the Antarctic!

For November 2023, the ice extent was "only" second-lowest on record.
Ice is missing especially in the Ross and Weddell Sea.

⚒️🧪
Map showing the Antarctic sea-ice concentration averaged over November 2023. For comparison, the mean November sea-ice extent for the period 1981-2010 is represented by an orange contour. Source data is OSI SAF sea-ice concentration CDR v3.0 Line graph showing the daily sea-ice extent for the Antarctic for the period 1978 to 2023. 2023 is shown in black while the previous years are shown in decadal-grouped colors. Data source is the OSI SAF sea-ice index v2.2.
December 1, 2023 at 10:52 AM
Reposted by Stefan Hendricks
eeror.bsky.social
At ESA ESTEC for the CRISTAL Mission Advisory Group meeting. The first flight model parts are already being made! We are still looking at a launch date in 2027!

(Image: ESA)
Artist's impression of the CRISTAL satellite orbiting Earth
November 27, 2023 at 9:28 AM
Reposted by Stefan Hendricks
signeaaboe.bsky.social
"For the sixth consecutive month and the eighth month in 2023 (after January, February, and May–September), Antarctic sea ice extent reached record low levels for the time of year."

👉https://climate.copernicus.eu/sea-ice-cover-october-2023
🧪⚒️
Time series of monthly mean Antarctic sea ice extent anomalies for all October months from 1979 to 2023. The anomalies are expressed as a percentage of the October average for the period 1981-2010. Data source: EUMETSAT OSI SAF Sea Ice Index v2.2. Credit: Copernicus Climate Change Service/ECMWF/EUMETSAT.
November 8, 2023 at 10:54 AM
Reposted by Stefan Hendricks
oceanterra.org
Exceptional October temperatures! 

The anomaly for October 2023 is

the second largest anomaly (after September 2023)

of any month

of any year

in the ERA dataset (back to 1940)

Making it virtually certain that 2023 will be the warmest year on record

More: climate.copernicus.eu/copernicus-o...
November 8, 2023 at 6:14 AM
Reposted by Stefan Hendricks
signeaaboe.bsky.social
Look at this blue dot!
Skandinavia in a cold world of its own in October 2023

All credit to: Scott Duncan (@ScottDuncanXW)
⚒️🧪
November 8, 2023 at 7:14 AM
Reposted by Stefan Hendricks
seaice.de
Unfortunately, the RFI situation in the Russian Arctic is not improving. There are still large data gaps in the SMOS sea ice product due to forbidden microwave emission in the protected L-band. Most likely from military activity, I suppose.

rfi.smos.eo.esa.int
November 7, 2023 at 7:14 AM